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Spastic paraplegia 35

Fatty acid hydroxylase-associated neurodegeneration (FAHN) is characterized by central nervous system involvement including corticospinal tract involvement (spasticity), mixed movement disorder (ataxia/dystonia), eye findings (optic atrophy, oculomotor abnormalities) early in the disease course, and progressive intellectual impairment and seizures later in the disease course. FAHN is considered to be a subtype of neurodegeneration with brain iron accumulation (NBIA). To date, a total of 25 individuals from seven families of diverse ethnicity with FAHN have been described; much is yet to be learned about the clinical manifestations and natural history. [from GeneReviews]

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Chondrodysplasia punctata 2 X-linked dominant

The findings in X-linked chondrodysplasia punctata 2 (CDPX2) range from fetal demise with multiple malformations and severe growth retardation to much milder manifestations, including adults with no recognizable physical abnormalities. At least 95% of liveborn individuals with CDPX2 are female with the following findings: Growth deficiency/short stature. Distinctive craniofacial appearance . Skeletal changes: stippling (chondrodysplasia punctate) on x-rays of the epiphyses of the long bones and vertebrae, the trachea and distal ends of the ribs seen in children prior to completion of normal epiphyseal ossification; rhizomelic (i.e., proximal) shortening of limbs that is often asymmetric; scoliosis. Ectodermal changes: linear or blotchy scaling ichthyosis in the newborn that usually resolves in the first months of life leaving linear or whorled atrophic patches involving hair follicles (follicular atrophoderma); coarse hair with scarring alopecia; occasional flattened or split nails; normal teeth. Ocular changes: cataracts; microphthalmia and/or microcornea. Intellect is usually normal. Rarely affected males have been identified with a phenotype that includes: hypotonia; moderate to profound developmental delay; seizures; cerebellar (primarily vermis) hypoplasia and/or Dandy-Walker variant; and agenesis of the corpus callosum. [from GeneReviews]

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